From e081c8463ac947e75f20ee11c6516f089efddaf6 Mon Sep 17 00:00:00 2001 From: Ander Conselvan de Oliveira Date: Thu, 2 Mar 2017 14:58:57 +0200 Subject: [PATCH] drm/i915: Remove duplicate DDI enabling logic from MST path MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The logic to enable a DDI in intel_mst_pre_enable_dp() is essentially the same as in intel_ddi_pre_enable_dp(). So reuse the latter function by calling the post_disable hook on the intel_dig_port instead of duplicating that code. v2: Don't oops because of a NULL encoder->crtc. (Ville) v3: Warn for MST + PORT_E too. (Ville) Cc: Imre Deak Cc: Ville Syrjälä Signed-off-by: Ander Conselvan de Oliveira Reviewed-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/20170302125857.14665-8-ander.conselvan.de.oliveira@intel.com --- drivers/gpu/drm/i915/intel_ddi.c | 2 ++ drivers/gpu/drm/i915/intel_dp_mst.c | 23 +++-------------------- 2 files changed, 5 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index ebccd4863d7f..04676760e6fd 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1713,6 +1713,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, enum port port = intel_ddi_get_encoder_port(encoder); struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base); + WARN_ON(link_mst && (port == PORT_A || port == PORT_E)); + intel_dp_set_link_params(intel_dp, link_rate, lane_count, link_mst); if (encoder->type == INTEL_OUTPUT_EDP) diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index a8334e18c4fc..094cbdcbcd6d 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -159,26 +159,9 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); - if (intel_dp->active_mst_links == 0) { - intel_ddi_clk_select(&intel_dig_port->base, - pipe_config->shared_dpll); - - intel_display_power_get(dev_priv, - intel_dig_port->ddi_io_power_domain); - - intel_prepare_dp_ddi_buffers(&intel_dig_port->base); - intel_dp_set_link_params(intel_dp, - pipe_config->port_clock, - pipe_config->lane_count, - true); - - intel_ddi_init_dp_buf_reg(&intel_dig_port->base); - - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); - - intel_dp_start_link_train(intel_dp); - intel_dp_stop_link_train(intel_dp); - } + if (intel_dp->active_mst_links == 0) + intel_dig_port->base.pre_enable(&intel_dig_port->base, + pipe_config, NULL); ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, connector->port, -- 2.30.2